COMPRISED OF

COMPOSED OF

Although “comprise” is used primarily to mean “to include,” it is also
often stretched to mean “is made up of”—a meaning that some critics
object to. The most cautious route is to avoid using “of” after any form
of “comprise” and substitute “is composed of” in sentences like this:
“Jimmy’s paper on Marxism was composed entirely of sentences copied off
the Marx Brothers Home Page.”

There’s a lot of disagreement about the proper use of “comprise,” but most authorities agree that the whole comprises the parts: “Our pets comprise one dog, two cats, and a turtle.” The whole comes first, then “comprise” followed by the parts. But there’s so much confusion surrounding the usage of this word that it may be better to avoid it altogether.